Necker



(No Model.)`

o. K. LONGBNBGKER.

CRANK SHAFT.-

No. 491,487. Patented Pb. 7, 14893.

ernst CHARLES K. LONGENEOKER, OF PAINTED kPOST, NEW YORK, ASSIGNOR TO THE WESTON ENGINE COMPANY, OF SAME PLACE.

CRAN K-SHAFT.

SPECIFICATION forming part of Letters Patent No. 491,481?, dated February '7, 1893.

Application filed September 17, 1892. Serial No. 446,181. (No model.)

To all whom, t may concern: upper ends of the crank arms or webs and Be it known that I, CHARLES K. LONGE- bear at its ends against the sides of the arms NECKER, a citizen of the United States, residr webs and thus afford additional strength to ing at Painted Post, in the county of Steuben said arms. Oilductst'are drilled through the and State of New York, have invented certain wrist pin,from its upper surface, and through 55 new and useful Improvements in Crank-Shafts the crank arms or Webs, and through the Webs for Steam-Engines; and I do hereby declare of the disks on inclining or diverging lines, the following to be a full, clear, and exact deas shown, each of the disks being formed with scription of the invention, such as will enable a slightboss 7a against which the crank arms ro others skilled in the art to which it appertains bear and said bosses being extended, as at l, 6o to make and use the same. Fig. 2, so as to carry the same above or past This invention relates, generally, to the the point where the oil ducts of the crank crank shafts of steam engines and particularly arms connect with or join the oil ducts in the to the balancing disks thereof, and it has for disks, thus forming a joint to prevent leakits main object to providea crank shaft whose age of oil at these points. The studs d are 65 counter-balancing disks may be removed and screwed into the disks and cut off flush with replaced without affecting their truth in the outer faces of the disks, and pass through running, and it consists in the novel manner the openings c of the flange a, and nuts are of constructing, arranging and securing the run thereon to retain the parts together,which,

zo parts as will be hereinafter fully described however, are readily separated and the disks 7o and claimed. removed when it becomes necessary to true In the accompanying drawings forming a the wrist pins, as frequently occurs. part of this specification-Figure l is a side It will be observed that the crank arms have elevation of my improved shaft showing one a lateral bearing at their upper ends on each disk in full lines and the other in section; sideagainst theprojections hand also against 75 Fig. 2 a vertical section on the line xda, Fig. the bosses 7e of the disks, and that the union l; and Fig. 3 a detail perspective view of the of the parts is practically the same as if they shaft with the disks removed. were cast in one piece, and yet enabling them Similar letters refer tosimilar parts throughto be readily separated when necessary and 3o out the several views. their replacement again without in any man- 8o A represents the shaft, B circular bosses, C ner affecting the running of the disks to their crank arms or webs, and E a wrist pin, all detriment. Also it will be noticed that the cast together in one piece of steel. Each of construction described furnishes a secure and the crank arms or webs, as best shown in Fig. substantial bearing for the disks as they are 5 5 3, is formed with a flange a, ovoidal in outline, mounted on the bosses B with the inner faces 85 and of less thickness than the body or main of their bosses 7c bearing directly and at all part h of the web, through which openings c points of their surfaces on the flanges a of the are drilled to receive the studs d of the councrank arms or webs O, and are there secured terbalancing disks D to secure the latter to by the studs passing through the bodies of 4o the shaft. The disks I) are each formed with the flanges a and bosses 7c at a sufficient dis- 9o a peripheral flange c and their lower halves tance from their edges to insure ample are enlarged or thickened on their inner faces strength of the parts to withstand the strain to form counterbalancing weights f which are put on them while the engine is running. semi-circular in shape. An opening g is Having thus described my invention what formed in the center of each of the disks Iclaim as new and desire to secure by Letters 95 adapted to accurately fit the bosses B cast on Patent is: the shaft A at the points where the shaft joins 1. The combination, with a crank shaft havthe crank arms or webs, and aprojection h is ing an integral crank arm or web provided cast on the inner face of each of the disks, with a lateral iiange, of a counterbalancing 5o which projection is formed to extend over the disk concentrically mounted on said shaft and roo adapted to be removably secured to the face of said ange, substantially as described.

2. The combination7 With acrank shaft having an integral crank arm or Web provided with a lateral flange, of a counterbalancing disk con centrically mounted on said shaft and removably secured to the outer face ot' said flange and having projections adapted to tit against the sides of said crank arm or web atits outer end, substantially as described.

3. The combination, With a crank shaft, the bosses, the laterally flanged crank arms or Webs, and a Wrist pin all in one piece, of Weighted disks centrally mounted on said bosses and removably secured to said flanged arms or Webs and having projections adapted 

